New to me 2002 Yukon 5.3L with rear air. Horrible noise upon acceleration with AC on. Tensioner is jumping up and down, and according to GM TSB #03-01-38-019A, it is caused by the compressor slugging. The compressor is very low on the engine and apparently liquid refrigerant and oil can pool in the compressor causing it to slug (hydraulic binding). I already replaced the belt and tensioner.

Is there any way to get it out of this condition without replacing the compressor like TSB says? What if I idle it for a long time, as it doesn't seem to do it at idle. Would that eventually pump the accumulated fluids out? Heat up the compressor?

Four Seasons/Comfort Temp sells a DeSlugger kit for Chrysler minivans and a few other vehicles.It pulses the coil for a few minutes when the AC is turned on,to prevent compressor explosions/case splitting.

I have one installed in my 02 Silverado since the truck barely gets used and as a preventative action to prevent slugging if it ever happens. A/C components are all original w/ 150,000mi on it so I gonna make it last.

Where is the accumulator located ? Higher or lower than the compressor ?

Best of luck , :-)

higher...much higher

OK , best I remember the last Chevy Lumina sedan we had was a 3.1l V-6 , 1996 model . The A/C compressor was mounted down low on the engine .

Accumulator up high . Never had this problem , that I know of .

I am wondering if the truck in question is over charged with oil , or refrigerant of both ? Fan not blowing enough air and too much liquid refrigerant returning ? Something wrong with the expansion device & the evaporator coil being flooded ?